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#!/usr/bin/env perl
use warnings 'FATAL' => 'all';
use strict;
my $PROG = 'metas/perl.d/perl-dist';
my $PBPROG = 'perl-pkgbuild';
sub DBG {}
if(exists $ENV{'GENDBG'}){
no warnings 'redefine';
*DBG = sub { print STDERR "$PROG: DBG: ", @_ };
}
package Convert;
*DBG = *main::DBG;
use Module::CoreList;
use LWP::UserAgent qw();
use YAML::XS qw();
use version qw();
# Match unpredictible package names .
my %OVERRIDE =
('libwww-perl' => 'perl-libwww',
'aceperl' => 'perl-ace',
'mod_perl' => 'mod_perl',
'glade-perl-two' => 'perl-glade-two',
'Gnome2-GConf' => 'gconf-perl',
'Gtk2-GladeXML' => 'glade-perl',
'Glib' => 'glib-perl',
'Gnome2' => 'gnome-perl',
'Gnome2-VFS' => 'gnome-vfs-perl',
'Gnome2-Canvas' => 'gnomecanvas-perl',
'Gnome2-GConf' => 'gconf-perl',
'Gtk2' => 'gtk2-perl',
'Cairo' => 'cairo-perl',
'Pango' => 'pango-perl',
'Perl-Critic' => 'perl-critic',
'Perl-Tidy' => 'perl-tidy',
'App-Ack' => 'ack',
'TermReadKey' => 'perl-term-readkey');
sub dist2pkg
{
my($name, $ver) = @_;
return dist_pkgname($name), dist_pkgver($ver);
}
# Copied from CPANPLUS::Dist::Arch
sub dist_pkgname
{
my($distname) = @_;
return $OVERRIDE{$distname} if(exists $OVERRIDE{$distname});
# Package names should be lowercase and consist of alphanumeric
# characters only (and hyphens!)...
$distname = lc $distname;
$distname =~ tr/_+/--/;
$distname =~ tr/-a-z0-9//cd; # Delete all other chars
$distname =~ tr/-/-/s;
# Delete leading or trailing hyphens...
$distname =~ s/\A-//;
$distname =~ s/-\z//;
die qq{Dist name '$distname' completely violates packaging standards}
if(length $distname == 0);
# Don't prefix the package with perl- if it IS perl...
$distname = "perl-$distname" unless($distname eq 'perl');
return $distname;
}
sub dist_pkgver
{
my($version) = @_;
# Remove developer versions because pacman has no special logic
# to handle comparing them to regular versions such as perl uses.
$version =~ s/_[^_]+\z//;
# Package versions should be numbers and decimal points only...
$version =~ tr/-_/../;
$version =~ tr/0-9.//cd;
$version =~ tr/././s;
$version =~ s/^[.]|[.]$//g;
return $version;
}
#---HELPER FUNCTION---
# Decide if the dist. is named after the module.
sub _ismainmod
{
my($mod_name, $dist_name) = @_;
$mod_name =~ tr/:/-/s;
return lc($mod_name) eq lc($dist_name);
}
#---HELPER FUNCTION---
# Merges the right-hand deps into the left-hand deps.
sub _merge
{
my($left_deps, $right_deps) = @_;
MERGE_LOOP:
while(my($pkg, $ver) = each %$right_deps){
if($left_deps->{$pkg}){
my $leftver = version->parse($left_deps->{$pkg});
my $rightver = version->parse($ver);
next MERGE_LOOP if $leftver > $rightver;
}
$left_deps->{$pkg} = $ver;
}
return;
}
#---HELPER FUNCTION---
# Merge duplicate deps into $left always storing the greatest version there.
sub _mergedups
{
my($left, $right) = @_;
for my $name (keys %$left){
my $rver = delete $right->{$name} or next;
my $lver = $left->{$name};
my $lvo = ($lver ? version->parse($lver) : 0);
my $rvo = ($rver ? version->parse($rver) : 0);
$left->{$name} = ($lvo > $rvo ? $lvo : $rvo);
}
return;
}
sub _filterdeps(&$)
{
my($fsub, $deps) = @_;
my %fed;
my @pkgs = keys(%$deps);
for my $dname (grep { $fsub->() } @pkgs){
my $dver = delete $deps->{$dname};
$fed{$dname} = $dver if(defined $dver);
}
return \%fed;
}
#---HELPER FUNCTION---
sub _yankcheckers
{
_filterdeps { /^perl-pod-coverage$|^perl-test-/ } $_[0]
}
#---HELPER FUNCTION---
# Converts a decimal perl version (like $]) into the dotted decimal
# form that the official ArchLinux perl package uses.
sub _perldepver
{
my($perlver) = @_;
# Fix perl-style vstrings which have a leading "v".
return $perlver if($perlver =~ s/\Av//);
return $perlver unless($perlver =~ /\A(\d+)[.](\d{3})(\d{1,3})\z/);
# Re-apply the missing trailing zeroes.
my $patch = $3;
$patch .= q{0} x (3 - length $patch);
return sprintf('%d.%d.%d', $1, $2, $patch);
}
#---PUBLIC FUNCNTION---
# Translates CPAN module dependencies into ArchLinux package dependencies.
sub _reqs2deps
{
my($prereqs) = @_;
my(@mods, %pkgdeps);
# Filter out deps on 'perl' and any core modules that we can.
while(my ($name, $ver) = each(%$prereqs)) {
DBG("requires $name $ver\n");
my $cver = $Module::CoreList::version{$]}{$name};
if($name eq 'perl') {
$pkgdeps{'perl'} = _perldepver($ver);
}elsif($cver){
DBG("perl core has $name $cver\n");
my $vobj = eval { version->parse($ver) };
$cver = version->parse($cver);
if($vobj > $cver){
push @mods, $name;
}
}else{
push @mods, $name;
}
}
my %dists = _distsofmods(@mods);
while(my ($mod, $dist) = each %dists) {
DBG("$mod is provided by $dist\n");
my $pkgname = dist_pkgname($dist);
my $ver = $prereqs->{$mod};
# If the module is not named after the distribution, ignore its
# version which might not match the distribution.
undef $ver unless(_ismainmod($mod, $dist));
# If two module prereqs are in the same CPAN distribution then
# the version required for the main module will override.
# (because versions specified for other modules in the dist
# are 0)
$pkgdeps{$pkgname} ||= ($ver ? dist_pkgver($ver) : 0);
DBG("depends on $pkgname>=$pkgdeps{$pkgname}\n");
}
return \%pkgdeps;
}
sub prereqs
{
my($pkgname, $prereqs) = @_;
# maps perl names for different dependencies to ArchLinux's names
my %namemap = ('configure' => 'makedepends',
'build' => 'makedepends',
'test' => 'checkdepends',
'runtime' => 'depends',
);
my %pkgdeps;
while (my($perl, $arch) = each(%namemap)) {
my $reqs = $prereqs->{$perl}{'requires'};
my $deps; $deps = _reqs2deps($reqs) if($reqs);
next unless(keys %$deps);
if($pkgdeps{$arch}){
_merge($pkgdeps{$arch}, $deps);
}else{
$pkgdeps{$arch} = $deps;
}
}
# ArchLinux now has a separate array for dependencies that we only
# need for checking (aka "testing"). Older perl METAs do not
# have this separated. Force any test modules to be checkdepends.
if(!$pkgdeps{'checkdepends'} && $pkgname !~ /\Aperl-test-/){
my $checkdeps = {};
for(qw/makedepends depends/){
_merge($checkdeps, _yankcheckers($pkgdeps{$_}))
}
$pkgdeps{'checkdepends'} = $checkdeps;
}
# We at least require perl, if nothing else.
unless(grep { scalar keys %$_ > 0 } values %pkgdeps){
$pkgdeps{'depends'}{'perl'} = 0;
}
_mergedups(@pkgdeps{'makedepends', 'checkdepends'});
_mergedups(@pkgdeps{'depends', 'makedepends'});
# Convert all deps into arrays of strings.
for my $deptype (keys(%pkgdeps)){
$pkgdeps{$deptype} = _stringify($pkgdeps{$deptype});
}
return \%pkgdeps;
}
#---HELPER FUNCTION---
sub _stringify
{
my($deps) = @_;
my @depstrs;
for my $pkg (sort keys %$deps){
my $ver = $deps->{$pkg};
my $str = ($ver eq '0' ? $pkg : "$pkg>=$ver");
push @depstrs, $str;
}
return \@depstrs;
}
sub _distsofmods
{
my(@mods) = @_;
return () if(@mods == 0);
@mods = _nocore(@mods);
my $var = _vardir();
open my $fh, '<', "$var/cpanmods"
or die "$PROG: failed to open $var/cpanmods: $!";
my %mods = map { ($_ => 1) } @mods;
my %dists;
local $/ = '';
RECLOOP:
while(my $rec = <$fh>){
last RECLOOP unless(keys %mods > 0);
my($dist, @mvs) = split(/\n/, $rec);
MODLOOP:
for(@mvs){
my($m) = split;
my $fnd = delete($mods{$m}) or next;
$dists{$m} = $dist;
}
}
my @lost = keys %mods;
return %dists unless(@lost);
for my $m (@lost){
print STDERR "$PROG: failed to find module $m\n";
}
exit 1;
}
sub _nocore
{
my(@mods) = @_;
my $path = _vardir() . '/coremods';
unless(-f $path){
print STDERR "$PROG: error: $path is missing.
******************************************************************************
You must generate it with genpkg's metas/perl.d/scrapecore script. Run it
against the source distribution of perl that is currently being packaged.
******************************************************************************
";
exit 1;
}
open my $if, '<', $path or die "$PROG: open $path: $!";
my %mods = map { ($_ => 1) } @mods;
while(<$if>){
my($m) = split;
delete $mods{$m};
}
close $if;
return keys %mods;
}
sub _vardir
{
return $ENV{'PKGVAR'}
or die "$PROG: PKGVAR env variable is unset\n";
}
#-----------------------------------------------------------------------------
package main;
use File::Basename qw(basename dirname);
use File::Spec::Functions qw(catfile catdir rel2abs);
use File::Find qw(find);
use JSON::XS qw(decode_json); # for META.json
use YAML::XS (); # for META.yml
use Pod::Select (); # search POD for description
use Digest::MD5 (); # for md5sums & sha512sums
use Digest::SHA ();
sub printdata
{
my($pbvars) = @_;
print "options\n!emptydirs\n\n";
printmeta($pbvars);
return;
}
sub writepb
{
my($ddir) = @_;
my $dtype = (-f "$ddir/Build.PL" ? "MB" : "MM");
if(system $PBPROG => $dtype){
return $? >> 8;
}else{
return 0;
}
}
sub main
{
my $distpath = shift or die "Usage: $PROG [path to cpan dist file]\n";
$distpath = rel2abs($distpath);
my $dir = dirname($distpath);
my $file = basename($distpath);
my $info = distinfo($file);
chsrcdir(catdir($dir, 'src'), $file);
my $distdir = extractdist($file);
my $meta = loadmeta($distdir);
my $desc = $meta->{'abstract'};
if(!$desc || $desc eq '~' || $desc eq 'unknown'){
$meta->{'abstract'} = distdesc($distdir, $info->{'mod'});
}
my($name, $ver) = Convert::dist2pkg(@{$info}{'name', 'ver'});
my $deps = Convert::prereqs($name, $meta->{'prereqs'});
my %pbvars =
('pkgver' => $ver,
'pkgdesc' => $meta->{'abstract'},
'arch' => (xsdist($distdir) ? ['i686', 'x86_64'] : 'any'),
'md5sums' => md5sums($file),
'sha512sums' => sha512sums($file),
'distdir' => $distdir,
%$deps,
);
chdir $dir or die "chdir: $!";
my $ret = writepb($dir);
if($ret){
print STDERR "$PROG: failed to write PKGBUILD: error $ret\n";
return 1;
}
close STDOUT;
open STDOUT, '>', 'PKGDATA' or die "open PKGDATA: $!";
printdata(\%pbvars);
close STDOUT or die "close PKGDATA: $!";
return 0;
}
# Create the src/ directory and tarball symlink. Then chdir into it.
sub chsrcdir
{
my($srcdir, $distfile) = @_;
if(-e $srcdir){
system 'rm' => ('-fr', $srcdir);
die "failed to rm $srcdir\n" unless($? == 0);
}
mkdir $srcdir or die "mkdir $srcdir: $!";
chdir $srcdir or die "chdir $srcdir: $!";
unless(-f $distfile) {
symlink(catfile('..', $distfile), $distfile)
or die "symlink $distfile: $!";
}
return $srcdir;
}
sub distinfo
{
my($distfile) = @_;
my @c = split /-/, $distfile;
my $ver = pop @c;
my $name = join q{-}, @c;
my $mod = $name;
$mod =~ s/-/::/g;
return { 'name' => $name, 'ver' => $ver, 'mod' => $mod };
}
sub extractdist
{
my($file) = @_;
system 'bsdtar' => ('-xf', $file);
die "$PROG: bsdtar failed to extract $file\n" unless($? == 0);
opendir my $srcdir, '.' or die "opendir: $!";
my @dirs = grep { -d $_ && !/\A[.]/ } readdir $srcdir;
closedir $srcdir;
die "$PROG: many dirs (@dirs) inside the tarball $file\n" if(@dirs > 1);
die "$PROG: no dirs found in tarball $file\n" if(@dirs == 0);
return $dirs[0];
}
sub printmeta
{
my($pbvars) = @_;
while(my($name, $val) = each %$pbvars) {
if(!defined $val || $val eq q{}) {
warn "$PROG: warning: $name is undefined\n";
$val = q{};
}
print $name, "\n";
print "$_\n" for (ref $val ? @$val : $val);
print "\n";
}
# TODO: autodetect license type
printf("license\n%s\n\n", join "\n", qw/PerlArtistic GPL/);
}
sub loadmeta
{
my($distdir) = @_;
for my $metaext (qw/json yml/){
my $path = "$distdir/META.$metaext";
next unless(-f $path);
open my $metafh, '<', $path or die "open: $!";
my $meta = do { local $/; <$metafh> };
close $metafh;
$meta = ($metaext eq 'json' ? decode_json($meta) :
$metaext eq 'yml' ? YAML::XS::Load($meta) :
die "internal error: unknown \$metaext: $metaext");
upgrademeta($meta);
return $meta;
}
return undef;
}
sub upgrademeta
{
my($meta) = @_;
return if(exists $meta->{'prereqs'});
my $prereqs;
$prereqs->{'configure'}{'requires'}
= delete $meta->{'configure_requires'};
$prereqs->{'build'}{'requires'} = delete($meta->{'build_requires'});
$prereqs->{'runtime'}{'requires'} = delete($meta->{'requires'});
$meta->{'prereqs'} = $prereqs;
return;
}
sub xsdist
{
my($dir) = @_;
my $isxs;
find({ 'wanted' => sub { $isxs = 1 if(/[.]xs$/) }, 'no_chdir' => 1 },
$dir);
return $isxs;
}
#-----------------------------------------------------------------------------
sub distdesc
{
my($dir, $modname) = @_;
return _poddesc($dir, $modname) || _readmedesc($dir, $modname);
}
sub _poddesc
{
my($dir, $modname) = @_;
my $podselect = Pod::Select->new;
$podselect->select('NAME');
my $modpath = $modname; $modpath =~ s{::}{/}g;
my $moddir = dirname($modpath);
my $modfile = basename($modpath);
# First check under lib/ for a "properly" pathed module, with
# nested directories. Then search desperately for a .pm file that
# matches the module's last name component.
my @possible = glob("$dir/{lib/,}{$moddir/,}$modfile.{pod,pm}");
PODSEARCH:
for my $podpath (@possible){
next PODSEARCH unless(-f $podpath);
# Read the NAME section of the POD into a scalar.
my $namesect = q{};
open my $podfile, '<', $podpath or next PODSEARCH;
open my $podout, '>', \$namesect or die "open: $!";
$podselect->parse_from_filehandle($podfile, $podout);
close $podfile;
close $podout or die "close: $!";
next PODSEARCH unless($namesect);
# Remove formatting codes.
$namesect =~ s{ [IBCLEFSXZ] <(.*?)> }{$1}gxms;
$namesect =~ s{ [IBCLEFSXZ] <<(.*?)>> }{$1}gxms;
# The short desc is on a line beginning with 'Module::Name - '
return $1 if($namesect =~ / ^ \s* $modname [ -]+ ([^\n]+) /xms);
}
return undef;
}
#---HELPER FUNCTION---
sub _readmedesc
{
my($dir, $modname) = @_;
my $path = catfile($dir, 'README');
return undef unless(-f $path);
open my $fh, '<', $path or die "open: $!";
while(<$fh>){
chomp;
next unless((/\ANAME/ ... /\A[A-Z]+/)
&& / \A \s* ${modname} [\s\-]+ (.+) \z /x);
return $1;
}
close $fh;
return undef;
}
#-----------------------------------------------------------------------------
sub md5sums
{
return [ map {
open my $fh, '<', $_ or die "open: $!";
my $md5 = Digest::MD5->new()->addfile($fh)->hexdigest;
close $fh;
$md5;
} @_ ]
}
sub sha512sums
{
return [ map {
my $sha = Digest::SHA->new(512)->addfile($_)->hexdigest;
} @_ ]
}
exit main(@ARGV);
|